CN201111205Y - Bill counter magnetism detecting sensor - Google Patents
Bill counter magnetism detecting sensor Download PDFInfo
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- CN201111205Y CN201111205Y CNU2007200529472U CN200720052947U CN201111205Y CN 201111205 Y CN201111205 Y CN 201111205Y CN U2007200529472 U CNU2007200529472 U CN U2007200529472U CN 200720052947 U CN200720052947 U CN 200720052947U CN 201111205 Y CN201111205 Y CN 201111205Y
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Abstract
Disclosed is a currency count machine magnetic detecting sensor composed of a magnetic head, an amplified filtering line, a pulse shaping circuit and a singlechip E, and the detecting sensor utilizes a long magnetic head and an operational amplifier line to complete the effective collection and detection to weak magnetic signals, in particular the detection to magnetic signals produced during using the currency count machine, and the rubbing of the magnetic head against the bank note generates signals, thereby providing a method for improving the technique of the currency count machine and favoring the production manufacturing of the currency count machine. The magnetic detecting sensor can be used to effectively detect the magnetic signals of the currency count machine, and has the advantages of high sensitivity, high degree of linearity, simple structure, convenient correction to the measurement error, easy processing and manufacturing and making cost-saving.
Description
Technical field:
The utility model belongs to the magnetic detection sensor, particularly a kind of paper money counter magnetic detection sensor.
Background technology:
At present, in the use of paper money counter, the input of long magnetic head can not effectively be carried out effective detection of Renminbi, by it is 10 yuan that exist in the version banknote in 2005,20 yuan detection can not effectively be distinguished, paper money counter in the industry all has same problem, and the end can effectively solve, and is unfavorable for the upgrading of product.
Summary of the invention:
Order of the present utility model provides a kind of paper money counter magnetic detection sensor, utilize long magnetic head and op amps circuit to form, finish effective extraction and detection to the magnetic feeble signal, the detection of the magnetic signal in the middle of especially paper money counter uses, the friction of magnetic head and banknote produces signal, technological transformation to paper money counter provides a kind of method, is beneficial to the manufacturing of paper money counter.
The utility model is made up of magnetic head, amplification filtering circuit, pulse shaping circuit, single-chip microcomputer, the signal of magnetic head exports the amplification filtering circuit to, output signal is to pulse shaping circuit behind the amplification filtering circuit, signal after shaping pulse is handled is sent into single-chip microcomputer and is analyzed identification, its course of work is by detecting the safety line information of banknote, send into filtering, amplification that the amplification filtering circuit carries out magnetic signal then, then enter pulse shaping circuit and carry out effective extraction of signal, send into analysis, identification processing that single-chip microcomputer carries out magnetic signal subsequently.
It is that big magnetic head DCT output has 3 pins that described magnetic head detects, respectively with red, white line and ground wire sign, wherein red output line links to each other with ground wire and ground connection, white line then is the output of DCT detection signal, it links to each other with electrochemical capacitor C1, capacitor C 1 with send into op amps circuit after resistance R 1 is connected.
Described amplification filtering circuit is sent into operational amplifier U1A inverting input 2 pin by resistance R 1 output magnetic signal, resistance R 1 also connects capacitor C 2 and resistance R 2 simultaneously, carry out the preliminary amplification of signal, capacitor C 1, capacitor C 2 plays at this moment isolates the interference that exchanges and reduce the throat acoustical signal simultaneously, the signal of 1 pin output after amplifying of operational amplifier U1A, the 3rd pin of resistance R 3 concatenation operation amplifier U1A, other end ground connection, capacitor C 4 and capacitor C 5 are power filters of operational amplifier U1A, respectively connection-5V and+5V, eliminate the interference throat sound of power supply, operational amplifier U1A adopts dual power supply, the 1 pin output of operational amplifier U1A connects capacitor C 6, the other end output of capacitor C 6 connects resistance R 4 pins, another pin output of resistance R 4 connects inverting input the 6th pin of operational amplifier U1B, and connect capacitor C 3 and resistance R 5 pins simultaneously, the positive input of R6 resistance one termination U1B, other end ground connection, capacitor C 3, the pin 7 of another termination operational amplifier U1B of resistance R 5, signal after the output secondary amplifies, the signal of output also connects resistance R 7 and diode D1, and signal is exported the forward half-wave voltage signal behind diode D1, send into voltage comparator U2A.
The 4th pin of described voltage comparator U2A is exported the forward half-wave voltage signal after meeting D1, the 5th pin of voltage comparator U2A connects the benchmark comparative voltage, adjustable resistance VR1 and resistance R 7 are formed the dividing potential drop conditioned circuit, resistance R 7 connects the positive level of power supply, another termination VR1 adjustable resistance, the output of adjustable resistance VR1 connects 5 pin of U2A, the other end ground connection of adjustable resistance VR1; 2 pin of voltage comparator U2A output to the INT0 pin of single-chip microcomputer, and the crystal oscillator of single-chip microcomputer is general being connected with resetting.
The utility model can be used for effective detection of paper money counter magnetic signal, and its advantage is: highly sensitive, the linearity is good.Simple in structure, and be convenient to measuring error is revised.Easily processing and fabricating is saved cost of manufacture.
Description of drawings
Fig. 1 is an electronic-circuit diagram of the present utility model.
Embodiment:
Below in conjunction with this example the utility model is further described.
As shown in Figure 1, magnetic head is DCT, form by the high sensitivity telefault, it is experienced measured object and converts available signal to according to certain rules, can be when detecting the magnetic security line of banknote, produce millivolt level amplitude output signal, this exchanges the amplitude output signal after capacitor C1 filters alternating component, be input to operational amplifier A, the signal of crossing through C2, carry out the one-level processing and amplifying of signal after the R2 negative feedback, send into capacitor C3 after preliminary signal amplifies, C3 plays the effect of isolating the throat acoustical signal at this, filters out useless interference throat acoustical signal, and then the C that enters operational amplifier carries out the secondary amplification of signal, after negative feedback, amplify magnetic signal to certain amplitude, send into voltage comparator D then, the R6 of voltage comparator, the dividing potential drop that VR1 forms is sent into relatively end, voltage comparator D gets the INT0 pin that effective amplitude signal is sent into single-chip microcomputer, carries out the analyzing and processing of magnetic signal by single-chip microcomputer, thereby finishes the sensing detection of whole paper money counter magnetic signal.
Claims (4)
1. a paper money counter magnetic detection sensor is made up of magnetic head, amplification filtering circuit, pulse shaping circuit, single-chip microcomputer, the signal that it is characterized in that magnetic head exports the amplification filtering circuit to, output signal is to pulse shaping circuit behind the amplification filtering circuit, and the signal after shaping pulse is handled is sent into single-chip microcomputer and analyzed identification.
2. according to the described a kind of paper money counter magnetic detection sensor of claim 1, it is characterized in that it is that big magnetic head DCT output has 3 pins that described magnetic head detects, respectively with red, white line and ground wire sign, wherein red output line links to each other with ground wire and ground connection, white line then is the output of DCT detection signal, it links to each other with electrochemical capacitor C1, capacitor C 1 with send into op amps circuit after resistance R 1 is connected.
3. according to the described a kind of paper money counter magnetic detection sensor of claim 1, it is characterized in that described amplification filtering circuit sends into operational amplifier U1A inverting input 2 pin by resistance R 1 output magnetic signal, resistance R 1 also connects capacitor C 2 and resistance R 2 simultaneously, carry out the preliminary amplification of signal, capacitor C 1, capacitor C 2 plays at this moment isolates the interference that exchanges and reduce the throat acoustical signal simultaneously, the signal of 1 pin output after amplifying of operational amplifier U1A, the 3rd pin of resistance R 3 concatenation operation amplifier U1A, other end ground connection, capacitor C 4 and capacitor C 5 are power filters of U1A, respectively connection-5V and+5V, eliminate the interference throat sound of power supply, U1A adopts dual power supply, the 1 pin output of U1A connects capacitor C 6, the other end output of capacitor C 6 connects resistance R 4 pins, another pin output of resistance R 4 connects inverting input the 6th pin of operational amplifier U1B, and connect capacitor C 3 and resistance R 5 pins simultaneously, the positive input of R6 resistance one termination U1B, other end ground connection, capacitor C 3, the pin 7 of another termination U1B of resistance R 5, signal after the output secondary amplifies, the signal of output also connects resistance R 7 and diode D1, signal is exported the forward half-wave voltage signal behind diode D1, send into voltage comparator U2A.
4. according to the described a kind of paper money counter magnetic detection sensor of claim 1, the 4th pin that it is characterized in that described voltage comparator U2A connects output forward half-wave voltage signal behind the D1, the 5th pin of U2A connects the benchmark comparative voltage, VR1 and resistance R 7 are formed the dividing potential drop conditioned circuit, resistance R 7 connects the positive level of power supply, another termination VR1 adjustable resistance, the output of adjustable resistance VR1 connects 5 pin of U2A, the other end ground connection of adjustable resistance VR1; 2 pin of voltage comparator U2A output to the INTO pin of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200529472U CN201111205Y (en) | 2007-06-13 | 2007-06-13 | Bill counter magnetism detecting sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200529472U CN201111205Y (en) | 2007-06-13 | 2007-06-13 | Bill counter magnetism detecting sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201111205Y true CN201111205Y (en) | 2008-09-03 |
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ID=39895743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200529472U Expired - Fee Related CN201111205Y (en) | 2007-06-13 | 2007-06-13 | Bill counter magnetism detecting sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201111205Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106934913A (en) * | 2017-02-20 | 2017-07-07 | 深圳怡化电脑股份有限公司 | A kind of System and method for for measuring inductance change |
| CN110706398A (en) * | 2018-06-22 | 2020-01-17 | 厦门临泰微科技有限公司 | Magnetic signal identification circuit module compatible with world currency (paper money) |
-
2007
- 2007-06-13 CN CNU2007200529472U patent/CN201111205Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106934913A (en) * | 2017-02-20 | 2017-07-07 | 深圳怡化电脑股份有限公司 | A kind of System and method for for measuring inductance change |
| CN110706398A (en) * | 2018-06-22 | 2020-01-17 | 厦门临泰微科技有限公司 | Magnetic signal identification circuit module compatible with world currency (paper money) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |